Add 72/5 and 20/8
1st number: 14 2/5, 2nd number: 2 4/8
72/5 + 20/8 is 169/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
72/5 = 72 × 8/5 × 8 = 576/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
20/8 = 20 × 5/8 × 5 = 100/40 - Add the two like fractions:
576/40 + 100/40 = 576 + 100/40 = 676/40 - 676/40 simplified gives 169/10
- So, 72/5 + 20/8 = 169/10
In mixed form: 169/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/5+40/8 72/10+20/8 72/5+20/16 72/5+60/8 72/15+20/8 72/5+20/24 72/25+20/8 72/5+20/40 72/35+20/8 72/5+20/56